Finding the Third Proportional to 389,394 and 569,308.50

Step by Step Solution

1. Step 1: Write the proportion equation
   389,394 : 569,308.50 = 569,308.50 : x
2. Step 2: Convert to fraction form
   389,394/569,308.50 = 569,308.50/x
3. Step 3: Cross multiply
   389,394x = 569,308.50 × 569,308.50
4. Step 4: Simplify right side
   389,394x = 324,112,168,172.25
5. Step 5: Solve for x
   x = 324,112,168,172.25/389,394
6. Step 6: Final answer
   x = 832,350.19