Finding the Third Proportional to 642,692 and 1,357,624

Step by Step Solution

1. Step 1: Write the proportion equation
   642,692 : 1,357,624 = 1,357,624 : x
2. Step 2: Convert to fraction form
   642,692/1,357,624 = 1,357,624/x
3. Step 3: Cross multiply
   642,692x = 1,357,624 × 1,357,624
4. Step 4: Simplify right side
   642,692x = 1,843,142,925,376
5. Step 5: Solve for x
   x = 1,843,142,925,376/642,692
6. Step 6: Final answer
   x = 2,867,847.94