Finding the Third Proportional to 642,264 and 1,487,292

Step by Step Solution

1. Step 1: Write the proportion equation
   642,264 : 1,487,292 = 1,487,292 : x
2. Step 2: Convert to fraction form
   642,264/1,487,292 = 1,487,292/x
3. Step 3: Cross multiply
   642,264x = 1,487,292 × 1,487,292
4. Step 4: Simplify right side
   642,264x = 2,212,037,493,264
5. Step 5: Solve for x
   x = 2,212,037,493,264/642,264
6. Step 6: Final answer
   x = 3,444,124.99