Finding the Third Proportional to 137,015.30 and 215,235.98

Step by Step Solution

1. Step 1: Write the proportion equation
   137,015.30 : 215,235.98 = 215,235.98 : x
2. Step 2: Convert to fraction form
   137,015.30/215,235.98 = 215,235.98/x
3. Step 3: Cross multiply
   137,015.30x = 215,235.98 × 215,235.98
4. Step 4: Simplify right side
   137,015.30x = 46,326,528,969.88
5. Step 5: Solve for x
   x = 46,326,528,969.88/137,015.30
6. Step 6: Final answer
   x = 338,112.09