Finding the Third Proportional to 861,868.63 and 1,388,700

Step by Step Solution

1. Step 1: Write the proportion equation
   861,868.63 : 1,388,700 = 1,388,700 : x
2. Step 2: Convert to fraction form
   861,868.63/1,388,700 = 1,388,700/x
3. Step 3: Cross multiply
   861,868.63x = 1,388,700 × 1,388,700
4. Step 4: Simplify right side
   861,868.63x = 1,928,487,690,000
5. Step 5: Solve for x
   x = 1,928,487,690,000/861,868.63
6. Step 6: Final answer
   x = 2,237,565.72