Finding the Third Proportional to 639,500 and 938,514

Step by Step Solution

1. Step 1: Write the proportion equation
   639,500 : 938,514 = 938,514 : x
2. Step 2: Convert to fraction form
   639,500/938,514 = 938,514/x
3. Step 3: Cross multiply
   639,500x = 938,514 × 938,514
4. Step 4: Simplify right side
   639,500x = 880,808,528,196
5. Step 5: Solve for x
   x = 880,808,528,196/639,500
6. Step 6: Final answer
   x = 1,377,339.37