Finding the Third Proportional to 615,379 and 1,329,174

Step by Step Solution

1. Step 1: Write the proportion equation
   615,379 : 1,329,174 = 1,329,174 : x
2. Step 2: Convert to fraction form
   615,379/1,329,174 = 1,329,174/x
3. Step 3: Cross multiply
   615,379x = 1,329,174 × 1,329,174
4. Step 4: Simplify right side
   615,379x = 1,766,703,522,276
5. Step 5: Solve for x
   x = 1,766,703,522,276/615,379
6. Step 6: Final answer
   x = 2,870,919.42