Finding the Third Proportional to 315,735 and 486,056.50

Step by Step Solution

1. Step 1: Write the proportion equation
   315,735 : 486,056.50 = 486,056.50 : x
2. Step 2: Convert to fraction form
   315,735/486,056.50 = 486,056.50/x
3. Step 3: Cross multiply
   315,735x = 486,056.50 × 486,056.50
4. Step 4: Simplify right side
   315,735x = 236,250,921,192.25
5. Step 5: Solve for x
   x = 236,250,921,192.25/315,735
6. Step 6: Final answer
   x = 748,256.99