Finding the Third Proportional to 100,770.50 and 219,685

Step by Step Solution

1. Step 1: Write the proportion equation
   100,770.50 : 219,685 = 219,685 : x
2. Step 2: Convert to fraction form
   100,770.50/219,685 = 219,685/x
3. Step 3: Cross multiply
   100,770.50x = 219,685 × 219,685
4. Step 4: Simplify right side
   100,770.50x = 48,261,499,225
5. Step 5: Solve for x
   x = 48,261,499,225/100,770.50
6. Step 6: Final answer
   x = 478,924.88