Finding the Third Proportional to 474,690 and 712,129.50

Step by Step Solution

1. Step 1: Write the proportion equation
   474,690 : 712,129.50 = 712,129.50 : x
2. Step 2: Convert to fraction form
   474,690/712,129.50 = 712,129.50/x
3. Step 3: Cross multiply
   474,690x = 712,129.50 × 712,129.50
4. Step 4: Simplify right side
   474,690x = 507,128,424,770.25
5. Step 5: Solve for x
   x = 507,128,424,770.25/474,690
6. Step 6: Final answer
   x = 1,068,336.02