Finding the Third Proportional to 100,607 and 213,207.50

Step by Step Solution

1. Step 1: Write the proportion equation
   100,607 : 213,207.50 = 213,207.50 : x
2. Step 2: Convert to fraction form
   100,607/213,207.50 = 213,207.50/x
3. Step 3: Cross multiply
   100,607x = 213,207.50 × 213,207.50
4. Step 4: Simplify right side
   100,607x = 45,457,438,056.25
5. Step 5: Solve for x
   x = 45,457,438,056.25/100,607
6. Step 6: Final answer
   x = 451,831.76