Finding the Third Proportional to 758,316 and 1,139,418

Step by Step Solution

1. Step 1: Write the proportion equation
   758,316 : 1,139,418 = 1,139,418 : x
2. Step 2: Convert to fraction form
   758,316/1,139,418 = 1,139,418/x
3. Step 3: Cross multiply
   758,316x = 1,139,418 × 1,139,418
4. Step 4: Simplify right side
   758,316x = 1,298,273,378,724
5. Step 5: Solve for x
   x = 1,298,273,378,724/758,316
6. Step 6: Final answer
   x = 1,712,047.98