Finding the Third Proportional to 640,200 and 914,904

Step by Step Solution

1. Step 1: Write the proportion equation
   640,200 : 914,904 = 914,904 : x
2. Step 2: Convert to fraction form
   640,200/914,904 = 914,904/x
3. Step 3: Cross multiply
   640,200x = 914,904 × 914,904
4. Step 4: Simplify right side
   640,200x = 837,049,329,216
5. Step 5: Solve for x
   x = 837,049,329,216/640,200
6. Step 6: Final answer
   x = 1,307,480.99