Finding the Third Proportional to 64,607.63 and 99,280.69

Step by Step Solution

1. Step 1: Write the proportion equation
   64,607.63 : 99,280.69 = 99,280.69 : x
2. Step 2: Convert to fraction form
   64,607.63/99,280.69 = 99,280.69/x
3. Step 3: Cross multiply
   64,607.63x = 99,280.69 × 99,280.69
4. Step 4: Simplify right side
   64,607.63x = 9,856,654,910.47
5. Step 5: Solve for x
   x = 9,856,654,910.47/64,607.63
6. Step 6: Final answer
   x = 152,561.79