Finding the Third Proportional to 489,654 and 749,061

Step by Step Solution

1. Step 1: Write the proportion equation
   489,654 : 749,061 = 749,061 : x
2. Step 2: Convert to fraction form
   489,654/749,061 = 749,061/x
3. Step 3: Cross multiply
   489,654x = 749,061 × 749,061
4. Step 4: Simplify right side
   489,654x = 561,092,381,721
5. Step 5: Solve for x
   x = 561,092,381,721/489,654
6. Step 6: Final answer
   x = 1,145,895.64