Finding the Third Proportional to 621,480 and 1,353,676

Step by Step Solution

1. Step 1: Write the proportion equation
   621,480 : 1,353,676 = 1,353,676 : x
2. Step 2: Convert to fraction form
   621,480/1,353,676 = 1,353,676/x
3. Step 3: Cross multiply
   621,480x = 1,353,676 × 1,353,676
4. Step 4: Simplify right side
   621,480x = 1,832,438,712,976
5. Step 5: Solve for x
   x = 1,832,438,712,976/621,480
6. Step 6: Final answer
   x = 2,948,507.94