Finding the Third Proportional to 988,478 and 2,158,233.50

Step by Step Solution

1. Step 1: Write the proportion equation
   988,478 : 2,158,233.50 = 2,158,233.50 : x
2. Step 2: Convert to fraction form
   988,478/2,158,233.50 = 2,158,233.50/x
3. Step 3: Cross multiply
   988,478x = 2,158,233.50 × 2,158,233.50
4. Step 4: Simplify right side
   988,478x = 4,657,971,840,522.25
5. Step 5: Solve for x
   x = 4,657,971,840,522.25/988,478
6. Step 6: Final answer
   x = 4,712,266.58