Finding the Third Proportional to 508,500 and 690,608.25

Step by Step Solution

1. Step 1: Write the proportion equation
   508,500 : 690,608.25 = 690,608.25 : x
2. Step 2: Convert to fraction form
   508,500/690,608.25 = 690,608.25/x
3. Step 3: Cross multiply
   508,500x = 690,608.25 × 690,608.25
4. Step 4: Simplify right side
   508,500x = 476,939,754,968.06
5. Step 5: Solve for x
   x = 476,939,754,968.06/508,500
6. Step 6: Final answer
   x = 937,934.62