Finding the Third Proportional to 422,092 and 604,639.50

Step by Step Solution

1. Step 1: Write the proportion equation
   422,092 : 604,639.50 = 604,639.50 : x
2. Step 2: Convert to fraction form
   422,092/604,639.50 = 604,639.50/x
3. Step 3: Cross multiply
   422,092x = 604,639.50 × 604,639.50
4. Step 4: Simplify right side
   422,092x = 365,588,924,960.25
5. Step 5: Solve for x
   x = 365,588,924,960.25/422,092
6. Step 6: Final answer
   x = 866,135.64