Finding the Third Proportional to 91,345.50 and 140,485.50

Step by Step Solution

1. Step 1: Write the proportion equation
   91,345.50 : 140,485.50 = 140,485.50 : x
2. Step 2: Convert to fraction form
   91,345.50/140,485.50 = 140,485.50/x
3. Step 3: Cross multiply
   91,345.50x = 140,485.50 × 140,485.50
4. Step 4: Simplify right side
   91,345.50x = 19,736,175,710.25
5. Step 5: Solve for x
   x = 19,736,175,710.25/91,345.50
6. Step 6: Final answer
   x = 216,060.73