Finding the Third Proportional to 561,184 and 842,426

Step by Step Solution

1. Step 1: Write the proportion equation
   561,184 : 842,426 = 842,426 : x
2. Step 2: Convert to fraction form
   561,184/842,426 = 842,426/x
3. Step 3: Cross multiply
   561,184x = 842,426 × 842,426
4. Step 4: Simplify right side
   561,184x = 709,681,565,476
5. Step 5: Solve for x
   x = 709,681,565,476/561,184
6. Step 6: Final answer
   x = 1,264,614.75