Finding the Third Proportional to 558,414 and 749,047.50

Step by Step Solution

1. Step 1: Write the proportion equation
   558,414 : 749,047.50 = 749,047.50 : x
2. Step 2: Convert to fraction form
   558,414/749,047.50 = 749,047.50/x
3. Step 3: Cross multiply
   558,414x = 749,047.50 × 749,047.50
4. Step 4: Simplify right side
   558,414x = 561,072,157,256.25
5. Step 5: Solve for x
   x = 561,072,157,256.25/558,414
6. Step 6: Final answer
   x = 1,004,760.19