Finding the Third Proportional to 144,672 and 216,862.50

Step by Step Solution

1. Step 1: Write the proportion equation
   144,672 : 216,862.50 = 216,862.50 : x
2. Step 2: Convert to fraction form
   144,672/216,862.50 = 216,862.50/x
3. Step 3: Cross multiply
   144,672x = 216,862.50 × 216,862.50
4. Step 4: Simplify right side
   144,672x = 47,029,343,906.25
5. Step 5: Solve for x
   x = 47,029,343,906.25/144,672
6. Step 6: Final answer
   x = 325,075.65