Finding the Third Proportional to 331,113 and 512,585.25

Step by Step Solution

1. Step 1: Write the proportion equation
   331,113 : 512,585.25 = 512,585.25 : x
2. Step 2: Convert to fraction form
   331,113/512,585.25 = 512,585.25/x
3. Step 3: Cross multiply
   331,113x = 512,585.25 × 512,585.25
4. Step 4: Simplify right side
   331,113x = 262,743,638,517.56
5. Step 5: Solve for x
   x = 262,743,638,517.56/331,113
6. Step 6: Final answer
   x = 793,516.53