Finding the Third Proportional to 489,010 and 748,045.50

Step by Step Solution

1. Step 1: Write the proportion equation
   489,010 : 748,045.50 = 748,045.50 : x
2. Step 2: Convert to fraction form
   489,010/748,045.50 = 748,045.50/x
3. Step 3: Cross multiply
   489,010x = 748,045.50 × 748,045.50
4. Step 4: Simplify right side
   489,010x = 559,572,070,070.25
5. Step 5: Solve for x
   x = 559,572,070,070.25/489,010
6. Step 6: Final answer
   x = 1,144,295.76