Finding the Third Proportional to 137,736.28 and 289,414.69

Step by Step Solution

1. Step 1: Write the proportion equation
   137,736.28 : 289,414.69 = 289,414.69 : x
2. Step 2: Convert to fraction form
   137,736.28/289,414.69 = 289,414.69/x
3. Step 3: Cross multiply
   137,736.28x = 289,414.69 × 289,414.69
4. Step 4: Simplify right side
   137,736.28x = 83,760,861,340.72
5. Step 5: Solve for x
   x = 83,760,861,340.72/137,736.28
6. Step 6: Final answer
   x = 608,124.89