Finding the Third Proportional to 815,242 and 1,174,261

Step by Step Solution

1. Step 1: Write the proportion equation
   815,242 : 1,174,261 = 1,174,261 : x
2. Step 2: Convert to fraction form
   815,242/1,174,261 = 1,174,261/x
3. Step 3: Cross multiply
   815,242x = 1,174,261 × 1,174,261
4. Step 4: Simplify right side
   815,242x = 1,378,888,896,121
5. Step 5: Solve for x
   x = 1,378,888,896,121/815,242
6. Step 6: Final answer
   x = 1,691,385.99