Finding the Third Proportional to 122,715 and 143,430.75

Step by Step Solution

1. Step 1: Write the proportion equation
   122,715 : 143,430.75 = 143,430.75 : x
2. Step 2: Convert to fraction form
   122,715/143,430.75 = 143,430.75/x
3. Step 3: Cross multiply
   122,715x = 143,430.75 × 143,430.75
4. Step 4: Simplify right side
   122,715x = 20,572,380,045.56
5. Step 5: Solve for x
   x = 20,572,380,045.56/122,715
6. Step 6: Final answer
   x = 167,643.56