Finding the Third Proportional to 400,051.50 and 866,808

Step by Step Solution

1. Step 1: Write the proportion equation
   400,051.50 : 866,808 = 866,808 : x
2. Step 2: Convert to fraction form
   400,051.50/866,808 = 866,808/x
3. Step 3: Cross multiply
   400,051.50x = 866,808 × 866,808
4. Step 4: Simplify right side
   400,051.50x = 751,356,108,864
5. Step 5: Solve for x
   x = 751,356,108,864/400,051.50
6. Step 6: Final answer
   x = 1,878,148.46