Finding the Third Proportional to 1,377,800 and 2,172,350

Step by Step Solution

1. Step 1: Write the proportion equation
   1,377,800 : 2,172,350 = 2,172,350 : x
2. Step 2: Convert to fraction form
   1,377,800/2,172,350 = 2,172,350/x
3. Step 3: Cross multiply
   1,377,800x = 2,172,350 × 2,172,350
4. Step 4: Simplify right side
   1,377,800x = 4,719,104,522,500
5. Step 5: Solve for x
   x = 4,719,104,522,500/1,377,800
6. Step 6: Final answer
   x = 3,425,101.26