Finding the Third Proportional to 485,355 and 712,156.50

Step by Step Solution

1. Step 1: Write the proportion equation
   485,355 : 712,156.50 = 712,156.50 : x
2. Step 2: Convert to fraction form
   485,355/712,156.50 = 712,156.50/x
3. Step 3: Cross multiply
   485,355x = 712,156.50 × 712,156.50
4. Step 4: Simplify right side
   485,355x = 507,166,880,492.25
5. Step 5: Solve for x
   x = 507,166,880,492.25/485,355
6. Step 6: Final answer
   x = 1,044,940.06