Finding the Third Proportional to 401,535 and 550,580.50

Step by Step Solution

1. Step 1: Write the proportion equation
   401,535 : 550,580.50 = 550,580.50 : x
2. Step 2: Convert to fraction form
   401,535/550,580.50 = 550,580.50/x
3. Step 3: Cross multiply
   401,535x = 550,580.50 × 550,580.50
4. Step 4: Simplify right side
   401,535x = 303,138,886,980.25
5. Step 5: Solve for x
   x = 303,138,886,980.25/401,535
6. Step 6: Final answer
   x = 754,950.10