Finding the Third Proportional to 557,980 and 1,215,602

Step by Step Solution

1. Step 1: Write the proportion equation
   557,980 : 1,215,602 = 1,215,602 : x
2. Step 2: Convert to fraction form
   557,980/1,215,602 = 1,215,602/x
3. Step 3: Cross multiply
   557,980x = 1,215,602 × 1,215,602
4. Step 4: Simplify right side
   557,980x = 1,477,688,222,404
5. Step 5: Solve for x
   x = 1,477,688,222,404/557,980
6. Step 6: Final answer
   x = 2,648,281.70