Finding the Third Proportional to 66,323.81 and 99,280.69

Step by Step Solution

1. Step 1: Write the proportion equation
   66,323.81 : 99,280.69 = 99,280.69 : x
2. Step 2: Convert to fraction form
   66,323.81/99,280.69 = 99,280.69/x
3. Step 3: Cross multiply
   66,323.81x = 99,280.69 × 99,280.69
4. Step 4: Simplify right side
   66,323.81x = 9,856,654,910.47
5. Step 5: Solve for x
   x = 9,856,654,910.47/66,323.81
6. Step 6: Final answer
   x = 148,614.12