Finding the Third Proportional to 98,320.50 and 210,978

Step by Step Solution

1. Step 1: Write the proportion equation
   98,320.50 : 210,978 = 210,978 : x
2. Step 2: Convert to fraction form
   98,320.50/210,978 = 210,978/x
3. Step 3: Cross multiply
   98,320.50x = 210,978 × 210,978
4. Step 4: Simplify right side
   98,320.50x = 44,511,716,484
5. Step 5: Solve for x
   x = 44,511,716,484/98,320.50
6. Step 6: Final answer
   x = 452,720.61