Finding the Third Proportional to 988,456 and 2,158,160

Step by Step Solution

1. Step 1: Write the proportion equation
   988,456 : 2,158,160 = 2,158,160 : x
2. Step 2: Convert to fraction form
   988,456/2,158,160 = 2,158,160/x
3. Step 3: Cross multiply
   988,456x = 2,158,160 × 2,158,160
4. Step 4: Simplify right side
   988,456x = 4,657,654,585,600
5. Step 5: Solve for x
   x = 4,657,654,585,600/988,456
6. Step 6: Final answer
   x = 4,712,050.50