Finding the Third Proportional to 988,572 and 2,158,368

Step by Step Solution

1. Step 1: Write the proportion equation
   988,572 : 2,158,368 = 2,158,368 : x
2. Step 2: Convert to fraction form
   988,572/2,158,368 = 2,158,368/x
3. Step 3: Cross multiply
   988,572x = 2,158,368 × 2,158,368
4. Step 4: Simplify right side
   988,572x = 4,658,552,423,424
5. Step 5: Solve for x
   x = 4,658,552,423,424/988,572
6. Step 6: Final answer
   x = 4,712,405.80