Finding the Third Proportional to 531,492 and 807,078

Step by Step Solution

1. Step 1: Write the proportion equation
   531,492 : 807,078 = 807,078 : x
2. Step 2: Convert to fraction form
   531,492/807,078 = 807,078/x
3. Step 3: Cross multiply
   531,492x = 807,078 × 807,078
4. Step 4: Simplify right side
   531,492x = 651,374,898,084
5. Step 5: Solve for x
   x = 651,374,898,084/531,492
6. Step 6: Final answer
   x = 1,225,559.18