Finding the Third Proportional to 74,707.50 and 112,345.50

Step by Step Solution

1. Step 1: Write the proportion equation
   74,707.50 : 112,345.50 = 112,345.50 : x
2. Step 2: Convert to fraction form
   74,707.50/112,345.50 = 112,345.50/x
3. Step 3: Cross multiply
   74,707.50x = 112,345.50 × 112,345.50
4. Step 4: Simplify right side
   74,707.50x = 12,621,511,370.25
5. Step 5: Solve for x
   x = 12,621,511,370.25/74,707.50
6. Step 6: Final answer
   x = 168,945.71