Finding the Third Proportional to 488,990 and 748,012

Step by Step Solution

1. Step 1: Write the proportion equation
   488,990 : 748,012 = 748,012 : x
2. Step 2: Convert to fraction form
   488,990/748,012 = 748,012/x
3. Step 3: Cross multiply
   488,990x = 748,012 × 748,012
4. Step 4: Simplify right side
   488,990x = 559,521,952,144
5. Step 5: Solve for x
   x = 559,521,952,144/488,990
6. Step 6: Final answer
   x = 1,144,240.07