Finding the Third Proportional to 130,617.56 and 286,147.69

Step by Step Solution

1. Step 1: Write the proportion equation
   130,617.56 : 286,147.69 = 286,147.69 : x
2. Step 2: Convert to fraction form
   130,617.56/286,147.69 = 286,147.69/x
3. Step 3: Cross multiply
   130,617.56x = 286,147.69 × 286,147.69
4. Step 4: Simplify right side
   130,617.56x = 81,880,499,061.60
5. Step 5: Solve for x
   x = 81,880,499,061.60/130,617.56
6. Step 6: Final answer
   x = 626,872.05