Finding the Third Proportional to 349,218 and 540,925.50

Step by Step Solution

1. Step 1: Write the proportion equation
   349,218 : 540,925.50 = 540,925.50 : x
2. Step 2: Convert to fraction form
   349,218/540,925.50 = 540,925.50/x
3. Step 3: Cross multiply
   349,218x = 540,925.50 × 540,925.50
4. Step 4: Simplify right side
   349,218x = 292,600,396,550.25
5. Step 5: Solve for x
   x = 292,600,396,550.25/349,218
6. Step 6: Final answer
   x = 837,873.18