Finding the Third Proportional to 605,925 and 921,478.50

Step by Step Solution

1. Step 1: Write the proportion equation
   605,925 : 921,478.50 = 921,478.50 : x
2. Step 2: Convert to fraction form
   605,925/921,478.50 = 921,478.50/x
3. Step 3: Cross multiply
   605,925x = 921,478.50 × 921,478.50
4. Step 4: Simplify right side
   605,925x = 849,122,625,962.25
5. Step 5: Solve for x
   x = 849,122,625,962.25/605,925
6. Step 6: Final answer
   x = 1,401,365.89