Finding the Third Proportional to 76,900.50 and 105,394.50

Step by Step Solution

1. Step 1: Write the proportion equation
   76,900.50 : 105,394.50 = 105,394.50 : x
2. Step 2: Convert to fraction form
   76,900.50/105,394.50 = 105,394.50/x
3. Step 3: Cross multiply
   76,900.50x = 105,394.50 × 105,394.50
4. Step 4: Simplify right side
   76,900.50x = 11,108,000,630.25
5. Step 5: Solve for x
   x = 11,108,000,630.25/76,900.50
6. Step 6: Final answer
   x = 144,446.40