Finding the Third Proportional to 405,967.88 and 631,049.25

Step by Step Solution

1. Step 1: Write the proportion equation
   405,967.88 : 631,049.25 = 631,049.25 : x
2. Step 2: Convert to fraction form
   405,967.88/631,049.25 = 631,049.25/x
3. Step 3: Cross multiply
   405,967.88x = 631,049.25 × 631,049.25
4. Step 4: Simplify right side
   405,967.88x = 398,223,155,925.56
5. Step 5: Solve for x
   x = 398,223,155,925.56/405,967.88
6. Step 6: Final answer
   x = 980,922.83