Finding the Third Proportional to 76,903.50 and 105,399

Step by Step Solution

1. Step 1: Write the proportion equation
   76,903.50 : 105,399 = 105,399 : x
2. Step 2: Convert to fraction form
   76,903.50/105,399 = 105,399/x
3. Step 3: Cross multiply
   76,903.50x = 105,399 × 105,399
4. Step 4: Simplify right side
   76,903.50x = 11,108,949,201
5. Step 5: Solve for x
   x = 11,108,949,201/76,903.50
6. Step 6: Final answer
   x = 144,453.10