Finding the Third Proportional to 147,622.50 and 216,513

Step by Step Solution

1. Step 1: Write the proportion equation
   147,622.50 : 216,513 = 216,513 : x
2. Step 2: Convert to fraction form
   147,622.50/216,513 = 216,513/x
3. Step 3: Cross multiply
   147,622.50x = 216,513 × 216,513
4. Step 4: Simplify right side
   147,622.50x = 46,877,879,169
5. Step 5: Solve for x
   x = 46,877,879,169/147,622.50
6. Step 6: Final answer
   x = 317,552.40