Finding the Third Proportional to 13,087,042 and 19,984,855

Step by Step Solution

1. Step 1: Write the proportion equation
   13,087,042 : 19,984,855 = 19,984,855 : x
2. Step 2: Convert to fraction form
   13,087,042/19,984,855 = 19,984,855/x
3. Step 3: Cross multiply
   13,087,042x = 19,984,855 × 19,984,855
4. Step 4: Simplify right side
   13,087,042x = 399,394,429,371,025
5. Step 5: Solve for x
   x = 399,394,429,371,025/13,087,042
6. Step 6: Final answer
   x = 30,518,311.88