Finding the Third Proportional to 30,259.50 and 81,298.50

Step by Step Solution

1. Step 1: Write the proportion equation
   30,259.50 : 81,298.50 = 81,298.50 : x
2. Step 2: Convert to fraction form
   30,259.50/81,298.50 = 81,298.50/x
3. Step 3: Cross multiply
   30,259.50x = 81,298.50 × 81,298.50
4. Step 4: Simplify right side
   30,259.50x = 6,609,446,102.25
5. Step 5: Solve for x
   x = 6,609,446,102.25/30,259.50
6. Step 6: Final answer
   x = 218,425.49