Finding the Third Proportional to 98,898.75 and 212,544

Step by Step Solution

1. Step 1: Write the proportion equation
   98,898.75 : 212,544 = 212,544 : x
2. Step 2: Convert to fraction form
   98,898.75/212,544 = 212,544/x
3. Step 3: Cross multiply
   98,898.75x = 212,544 × 212,544
4. Step 4: Simplify right side
   98,898.75x = 45,174,951,936
5. Step 5: Solve for x
   x = 45,174,951,936/98,898.75
6. Step 6: Final answer
   x = 456,779.81