Finding the Third Proportional to 64,754,890.50 and 99,633,390

Step by Step Solution

1. Step 1: Write the proportion equation
   64,754,890.50 : 99,633,390 = 99,633,390 : x
2. Step 2: Convert to fraction form
   64,754,890.50/99,633,390 = 99,633,390/x
3. Step 3: Cross multiply
   64,754,890.50x = 99,633,390 × 99,633,390
4. Step 4: Simplify right side
   64,754,890.50x = 9,926,812,402,892,100
5. Step 5: Solve for x
   x = 9,926,812,402,892,100/64,754,890.50
6. Step 6: Final answer
   x = 153,298,265.60