Finding the Third Proportional to 1,350,456 and 2,138,438

Step by Step Solution

1. Step 1: Write the proportion equation
   1,350,456 : 2,138,438 = 2,138,438 : x
2. Step 2: Convert to fraction form
   1,350,456/2,138,438 = 2,138,438/x
3. Step 3: Cross multiply
   1,350,456x = 2,138,438 × 2,138,438
4. Step 4: Simplify right side
   1,350,456x = 4,572,917,079,844
5. Step 5: Solve for x
   x = 4,572,917,079,844/1,350,456
6. Step 6: Final answer
   x = 3,386,202.20