Finding the Third Proportional to 53,815,914 and 83,488,099.50

Step by Step Solution

1. Step 1: Write the proportion equation
   53,815,914 : 83,488,099.50 = 83,488,099.50 : x
2. Step 2: Convert to fraction form
   53,815,914/83,488,099.50 = 83,488,099.50/x
3. Step 3: Cross multiply
   53,815,914x = 83,488,099.50 × 83,488,099.50
4. Step 4: Simplify right side
   53,815,914x = 6,970,262,758,121,900
5. Step 5: Solve for x
   x = 6,970,262,758,121,900/53,815,914
6. Step 6: Final answer
   x = 129,520,475.27