Finding the Third Proportional to 543,834 and 764,478

Step by Step Solution

1. Step 1: Write the proportion equation
   543,834 : 764,478 = 764,478 : x
2. Step 2: Convert to fraction form
   543,834/764,478 = 764,478/x
3. Step 3: Cross multiply
   543,834x = 764,478 × 764,478
4. Step 4: Simplify right side
   543,834x = 584,426,612,484
5. Step 5: Solve for x
   x = 584,426,612,484/543,834
6. Step 6: Final answer
   x = 1,074,641.55