Finding the Third Proportional to 78,913 and 106,320.50

Step by Step Solution

1. Step 1: Write the proportion equation
   78,913 : 106,320.50 = 106,320.50 : x
2. Step 2: Convert to fraction form
   78,913/106,320.50 = 106,320.50/x
3. Step 3: Cross multiply
   78,913x = 106,320.50 × 106,320.50
4. Step 4: Simplify right side
   78,913x = 11,304,048,720.25
5. Step 5: Solve for x
   x = 11,304,048,720.25/78,913
6. Step 6: Final answer
   x = 143,246.98