Finding the Third Proportional to 988,474 and 2,158,195

Step by Step Solution

1. Step 1: Write the proportion equation
   988,474 : 2,158,195 = 2,158,195 : x
2. Step 2: Convert to fraction form
   988,474/2,158,195 = 2,158,195/x
3. Step 3: Cross multiply
   988,474x = 2,158,195 × 2,158,195
4. Step 4: Simplify right side
   988,474x = 4,657,805,658,025
5. Step 5: Solve for x
   x = 4,657,805,658,025/988,474
6. Step 6: Final answer
   x = 4,712,117.52