Finding the Third Proportional to 185,587.45 and 406,645.31

Step by Step Solution

1. Step 1: Write the proportion equation
   185,587.45 : 406,645.31 = 406,645.31 : x
2. Step 2: Convert to fraction form
   185,587.45/406,645.31 = 406,645.31/x
3. Step 3: Cross multiply
   185,587.45x = 406,645.31 × 406,645.31
4. Step 4: Simplify right side
   185,587.45x = 165,360,410,178.22
5. Step 5: Solve for x
   x = 165,360,410,178.22/185,587.45
6. Step 6: Final answer
   x = 891,010.72