Finding the Third Proportional to 328,570 and 712,908.50

Step by Step Solution

1. Step 1: Write the proportion equation
   328,570 : 712,908.50 = 712,908.50 : x
2. Step 2: Convert to fraction form
   328,570/712,908.50 = 712,908.50/x
3. Step 3: Cross multiply
   328,570x = 712,908.50 × 712,908.50
4. Step 4: Simplify right side
   328,570x = 508,238,529,372.25
5. Step 5: Solve for x
   x = 508,238,529,372.25/328,570
6. Step 6: Final answer
   x = 1,546,819.64