Finding the Third Proportional to 1,350,432 and 2,138,400

Step by Step Solution

1. Step 1: Write the proportion equation
   1,350,432 : 2,138,400 = 2,138,400 : x
2. Step 2: Convert to fraction form
   1,350,432/2,138,400 = 2,138,400/x
3. Step 3: Cross multiply
   1,350,432x = 2,138,400 × 2,138,400
4. Step 4: Simplify right side
   1,350,432x = 4,572,754,560,000
5. Step 5: Solve for x
   x = 4,572,754,560,000/1,350,432
6. Step 6: Final answer
   x = 3,386,142.03