Finding the Third Proportional to 345,066 and 528,520.50

Step by Step Solution

1. Step 1: Write the proportion equation
   345,066 : 528,520.50 = 528,520.50 : x
2. Step 2: Convert to fraction form
   345,066/528,520.50 = 528,520.50/x
3. Step 3: Cross multiply
   345,066x = 528,520.50 × 528,520.50
4. Step 4: Simplify right side
   345,066x = 279,333,918,920.25
5. Step 5: Solve for x
   x = 279,333,918,920.25/345,066
6. Step 6: Final answer
   x = 809,508.67