Finding the Third Proportional to 401,783 and 545,670.50

Step by Step Solution

1. Step 1: Write the proportion equation
   401,783 : 545,670.50 = 545,670.50 : x
2. Step 2: Convert to fraction form
   401,783/545,670.50 = 545,670.50/x
3. Step 3: Cross multiply
   401,783x = 545,670.50 × 545,670.50
4. Step 4: Simplify right side
   401,783x = 297,756,294,570.25
5. Step 5: Solve for x
   x = 297,756,294,570.25/401,783
6. Step 6: Final answer
   x = 741,087.34