Finding the Third Proportional to 64,137.75 and 99,555.38

Step by Step Solution

1. Step 1: Write the proportion equation
   64,137.75 : 99,555.38 = 99,555.38 : x
2. Step 2: Convert to fraction form
   64,137.75/99,555.38 = 99,555.38/x
3. Step 3: Cross multiply
   64,137.75x = 99,555.38 × 99,555.38
4. Step 4: Simplify right side
   64,137.75x = 9,911,272,691.39
5. Step 5: Solve for x
   x = 9,911,272,691.39/64,137.75
6. Step 6: Final answer
   x = 154,531.03