Finding the Third Proportional to 988,680 and 2,158,584

Step by Step Solution

1. Step 1: Write the proportion equation
   988,680 : 2,158,584 = 2,158,584 : x
2. Step 2: Convert to fraction form
   988,680/2,158,584 = 2,158,584/x
3. Step 3: Cross multiply
   988,680x = 2,158,584 × 2,158,584
4. Step 4: Simplify right side
   988,680x = 4,659,484,885,056
5. Step 5: Solve for x
   x = 4,659,484,885,056/988,680
6. Step 6: Final answer
   x = 4,712,834.17