Finding the Third Proportional to 100,996.50 and 212,928

Step by Step Solution

1. Step 1: Write the proportion equation
   100,996.50 : 212,928 = 212,928 : x
2. Step 2: Convert to fraction form
   100,996.50/212,928 = 212,928/x
3. Step 3: Cross multiply
   100,996.50x = 212,928 × 212,928
4. Step 4: Simplify right side
   100,996.50x = 45,338,333,184
5. Step 5: Solve for x
   x = 45,338,333,184/100,996.50
6. Step 6: Final answer
   x = 448,909.94