Finding the Third Proportional to 988,454 and 2,158,158

Step by Step Solution

1. Step 1: Write the proportion equation
   988,454 : 2,158,158 = 2,158,158 : x
2. Step 2: Convert to fraction form
   988,454/2,158,158 = 2,158,158/x
3. Step 3: Cross multiply
   988,454x = 2,158,158 × 2,158,158
4. Step 4: Simplify right side
   988,454x = 4,657,645,952,964
5. Step 5: Solve for x
   x = 4,657,645,952,964/988,454
6. Step 6: Final answer
   x = 4,712,051.30