Finding the Third Proportional to 987,008 and 2,143,140

Step by Step Solution

1. Step 1: Write the proportion equation
   987,008 : 2,143,140 = 2,143,140 : x
2. Step 2: Convert to fraction form
   987,008/2,143,140 = 2,143,140/x
3. Step 3: Cross multiply
   987,008x = 2,143,140 × 2,143,140
4. Step 4: Simplify right side
   987,008x = 4,593,049,059,600
5. Step 5: Solve for x
   x = 4,593,049,059,600/987,008
6. Step 6: Final answer
   x = 4,653,507.43