Finding the Third Proportional to 21,687,385.50 and 28,913,290.88

Step by Step Solution

1. Step 1: Write the proportion equation
   21,687,385.50 : 28,913,290.88 = 28,913,290.88 : x
2. Step 2: Convert to fraction form
   21,687,385.50/28,913,290.88 = 28,913,290.88/x
3. Step 3: Cross multiply
   21,687,385.50x = 28,913,290.88 × 28,913,290.88
4. Step 4: Simplify right side
   21,687,385.50x = 835,978,389,222,358.25
5. Step 5: Solve for x
   x = 835,978,389,222,358.25/21,687,385.50
6. Step 6: Final answer
   x = 38,546,757.48