Finding the Third Proportional to 621,702 and 1,115,478

Step by Step Solution

1. Step 1: Write the proportion equation
   621,702 : 1,115,478 = 1,115,478 : x
2. Step 2: Convert to fraction form
   621,702/1,115,478 = 1,115,478/x
3. Step 3: Cross multiply
   621,702x = 1,115,478 × 1,115,478
4. Step 4: Simplify right side
   621,702x = 1,244,291,168,484
5. Step 5: Solve for x
   x = 1,244,291,168,484/621,702
6. Step 6: Final answer
   x = 2,001,427.00