Finding the Third Proportional to 389,372 and 569,275.50

Step by Step Solution

1. Step 1: Write the proportion equation
   389,372 : 569,275.50 = 569,275.50 : x
2. Step 2: Convert to fraction form
   389,372/569,275.50 = 569,275.50/x
3. Step 3: Cross multiply
   389,372x = 569,275.50 × 569,275.50
4. Step 4: Simplify right side
   389,372x = 324,074,594,900.25
5. Step 5: Solve for x
   x = 324,074,594,900.25/389,372
6. Step 6: Final answer
   x = 832,300.72