Finding the Third Proportional to 357,093 and 553,378.50

Step by Step Solution

1. Step 1: Write the proportion equation
   357,093 : 553,378.50 = 553,378.50 : x
2. Step 2: Convert to fraction form
   357,093/553,378.50 = 553,378.50/x
3. Step 3: Cross multiply
   357,093x = 553,378.50 × 553,378.50
4. Step 4: Simplify right side
   357,093x = 306,227,764,262.25
5. Step 5: Solve for x
   x = 306,227,764,262.25/357,093
6. Step 6: Final answer
   x = 857,557.45