Finding the Third Proportional to 349,456.13 and 764,340

Step by Step Solution

1. Step 1: Write the proportion equation
   349,456.13 : 764,340 = 764,340 : x
2. Step 2: Convert to fraction form
   349,456.13/764,340 = 764,340/x
3. Step 3: Cross multiply
   349,456.13x = 764,340 × 764,340
4. Step 4: Simplify right side
   349,456.13x = 584,215,635,600
5. Step 5: Solve for x
   x = 584,215,635,600/349,456.13
6. Step 6: Final answer
   x = 1,671,785.37