Finding the Third Proportional to 141,615 and 216,121.50

Step by Step Solution

1. Step 1: Write the proportion equation
   141,615 : 216,121.50 = 216,121.50 : x
2. Step 2: Convert to fraction form
   141,615/216,121.50 = 216,121.50/x
3. Step 3: Cross multiply
   141,615x = 216,121.50 × 216,121.50
4. Step 4: Simplify right side
   141,615x = 46,708,502,762.25
5. Step 5: Solve for x
   x = 46,708,502,762.25/141,615
6. Step 6: Final answer
   x = 329,827.37