Finding the Third Proportional to 324,875 and 487,312.50

Step by Step Solution

1. Step 1: Write the proportion equation
   324,875 : 487,312.50 = 487,312.50 : x
2. Step 2: Convert to fraction form
   324,875/487,312.50 = 487,312.50/x
3. Step 3: Cross multiply
   324,875x = 487,312.50 × 487,312.50
4. Step 4: Simplify right side
   324,875x = 237,473,472,656.25
5. Step 5: Solve for x
   x = 237,473,472,656.25/324,875
6. Step 6: Final answer
   x = 730,968.75