Finding the Third Proportional to 30,415.50 and 45,501.75

Step by Step Solution

1. Step 1: Write the proportion equation
   30,415.50 : 45,501.75 = 45,501.75 : x
2. Step 2: Convert to fraction form
   30,415.50/45,501.75 = 45,501.75/x
3. Step 3: Cross multiply
   30,415.50x = 45,501.75 × 45,501.75
4. Step 4: Simplify right side
   30,415.50x = 2,070,409,253.06
5. Step 5: Solve for x
   x = 2,070,409,253.06/30,415.50
6. Step 6: Final answer
   x = 68,070.86