Finding the Third Proportional to 1,377,810 and 2,172,339

Step by Step Solution

1. Step 1: Write the proportion equation
   1,377,810 : 2,172,339 = 2,172,339 : x
2. Step 2: Convert to fraction form
   1,377,810/2,172,339 = 2,172,339/x
3. Step 3: Cross multiply
   1,377,810x = 2,172,339 × 2,172,339
4. Step 4: Simplify right side
   1,377,810x = 4,719,056,730,921
5. Step 5: Solve for x
   x = 4,719,056,730,921/1,377,810
6. Step 6: Final answer
   x = 3,425,041.72