Finding the Third Proportional to 90,772 and 100,978

Step by Step Solution

1. Step 1: Write the proportion equation
   90,772 : 100,978 = 100,978 : x
2. Step 2: Convert to fraction form
   90,772/100,978 = 100,978/x
3. Step 3: Cross multiply
   90,772x = 100,978 × 100,978
4. Step 4: Simplify right side
   90,772x = 10,196,556,484
5. Step 5: Solve for x
   x = 10,196,556,484/90,772
6. Step 6: Final answer
   x = 112,331.52