Finding the Third Proportional to 13,419,973,425 and 20,013,583,648.50

Step by Step Solution

1. Step 1: Write the proportion equation
   13,419,973,425 : 20,013,583,648.50 = 20,013,583,648.50 : x
2. Step 2: Convert to fraction form
   13,419,973,425/20,013,583,648.50 = 20,013,583,648.50/x
3. Step 3: Cross multiply
   13,419,973,425x = 20,013,583,648.50 × 20,013,583,648.50
4. Step 4: Simplify right side
   13,419,973,425x = 400,543,530,455,506,550,784
5. Step 5: Solve for x
   x = 400,543,530,455,506,550,784/13,419,973,425
6. Step 6: Final answer
   x = 29,846,819,942.98