Finding the Third Proportional to 1,377,808 and 2,172,336

Step by Step Solution

1. Step 1: Write the proportion equation
   1,377,808 : 2,172,336 = 2,172,336 : x
2. Step 2: Convert to fraction form
   1,377,808/2,172,336 = 2,172,336/x
3. Step 3: Cross multiply
   1,377,808x = 2,172,336 × 2,172,336
4. Step 4: Simplify right side
   1,377,808x = 4,719,043,696,896
5. Step 5: Solve for x
   x = 4,719,043,696,896/1,377,808
6. Step 6: Final answer
   x = 3,425,037.23