Finding the Third Proportional to 653,432 and 1,386,172

Step by Step Solution

1. Step 1: Write the proportion equation
   653,432 : 1,386,172 = 1,386,172 : x
2. Step 2: Convert to fraction form
   653,432/1,386,172 = 1,386,172/x
3. Step 3: Cross multiply
   653,432x = 1,386,172 × 1,386,172
4. Step 4: Simplify right side
   653,432x = 1,921,472,813,584
5. Step 5: Solve for x
   x = 1,921,472,813,584/653,432
6. Step 6: Final answer
   x = 2,940,585.73