Finding the Third Proportional to 488,961 and 747,978.75

Step by Step Solution

1. Step 1: Write the proportion equation
   488,961 : 747,978.75 = 747,978.75 : x
2. Step 2: Convert to fraction form
   488,961/747,978.75 = 747,978.75/x
3. Step 3: Cross multiply
   488,961x = 747,978.75 × 747,978.75
4. Step 4: Simplify right side
   488,961x = 559,472,210,451.56
5. Step 5: Solve for x
   x = 559,472,210,451.56/488,961
6. Step 6: Final answer
   x = 1,144,206.21