Finding the Third Proportional to 340,680 and 716,671.50

Step by Step Solution

1. Step 1: Write the proportion equation
   340,680 : 716,671.50 = 716,671.50 : x
2. Step 2: Convert to fraction form
   340,680/716,671.50 = 716,671.50/x
3. Step 3: Cross multiply
   340,680x = 716,671.50 × 716,671.50
4. Step 4: Simplify right side
   340,680x = 513,618,038,912.25
5. Step 5: Solve for x
   x = 513,618,038,912.25/340,680
6. Step 6: Final answer
   x = 1,507,626.04