Finding the Third Proportional to 100,259.50 and 208,812

Step by Step Solution

1. Step 1: Write the proportion equation
   100,259.50 : 208,812 = 208,812 : x
2. Step 2: Convert to fraction form
   100,259.50/208,812 = 208,812/x
3. Step 3: Cross multiply
   100,259.50x = 208,812 × 208,812
4. Step 4: Simplify right side
   100,259.50x = 43,602,451,344
5. Step 5: Solve for x
   x = 43,602,451,344/100,259.50
6. Step 6: Final answer
   x = 434,895.96