Finding the Third Proportional to 149,665.22 and 316,188.56

Step by Step Solution

1. Step 1: Write the proportion equation
   149,665.22 : 316,188.56 = 316,188.56 : x
2. Step 2: Convert to fraction form
   149,665.22/316,188.56 = 316,188.56/x
3. Step 3: Cross multiply
   149,665.22x = 316,188.56 × 316,188.56
4. Step 4: Simplify right side
   149,665.22x = 99,975,207,055.82
5. Step 5: Solve for x
   x = 99,975,207,055.82/149,665.22
6. Step 6: Final answer
   x = 667,992.26