Finding the Third Proportional to 647,279.86 and 970,920.42

Step by Step Solution

1. Step 1: Write the proportion equation
   647,279.86 : 970,920.42 = 970,920.42 : x
2. Step 2: Convert to fraction form
   647,279.86/970,920.42 = 970,920.42/x
3. Step 3: Cross multiply
   647,279.86x = 970,920.42 × 970,920.42
4. Step 4: Simplify right side
   647,279.86x = 942,686,465,613.93
5. Step 5: Solve for x
   x = 942,686,465,613.93/647,279.86
6. Step 6: Final answer
   x = 1,456,381.58