Finding the Third Proportional to 392,936.50 and 591,697.50

Step by Step Solution

1. Step 1: Write the proportion equation
   392,936.50 : 591,697.50 = 591,697.50 : x
2. Step 2: Convert to fraction form
   392,936.50/591,697.50 = 591,697.50/x
3. Step 3: Cross multiply
   392,936.50x = 591,697.50 × 591,697.50
4. Step 4: Simplify right side
   392,936.50x = 350,105,931,506.25
5. Step 5: Solve for x
   x = 350,105,931,506.25/392,936.50
6. Step 6: Final answer
   x = 890,998.75