Finding the Third Proportional to 45,157.50 and 70,321.50

Step by Step Solution

1. Step 1: Write the proportion equation
   45,157.50 : 70,321.50 = 70,321.50 : x
2. Step 2: Convert to fraction form
   45,157.50/70,321.50 = 70,321.50/x
3. Step 3: Cross multiply
   45,157.50x = 70,321.50 × 70,321.50
4. Step 4: Simplify right side
   45,157.50x = 4,945,113,362.25
5. Step 5: Solve for x
   x = 4,945,113,362.25/45,157.50
6. Step 6: Final answer
   x = 109,508.13