Finding the Third Proportional to 78,732 and 106,069.50

Step by Step Solution

1. Step 1: Write the proportion equation
   78,732 : 106,069.50 = 106,069.50 : x
2. Step 2: Convert to fraction form
   78,732/106,069.50 = 106,069.50/x
3. Step 3: Cross multiply
   78,732x = 106,069.50 × 106,069.50
4. Step 4: Simplify right side
   78,732x = 11,250,738,830.25
5. Step 5: Solve for x
   x = 11,250,738,830.25/78,732
6. Step 6: Final answer
   x = 142,899.19