Finding the Third Proportional to 7,998,807 and 12,880,714.50

Step by Step Solution

1. Step 1: Write the proportion equation
   7,998,807 : 12,880,714.50 = 12,880,714.50 : x
2. Step 2: Convert to fraction form
   7,998,807/12,880,714.50 = 12,880,714.50/x
3. Step 3: Cross multiply
   7,998,807x = 12,880,714.50 × 12,880,714.50
4. Step 4: Simplify right side
   7,998,807x = 165,912,806,030,510.25
5. Step 5: Solve for x
   x = 165,912,806,030,510.25/7,998,807
6. Step 6: Final answer
   x = 20,742,193.93