Finding the Third Proportional to 42,777 and 61,069.50

Step by Step Solution

1. Step 1: Write the proportion equation
   42,777 : 61,069.50 = 61,069.50 : x
2. Step 2: Convert to fraction form
   42,777/61,069.50 = 61,069.50/x
3. Step 3: Cross multiply
   42,777x = 61,069.50 × 61,069.50
4. Step 4: Simplify right side
   42,777x = 3,729,483,830.25
5. Step 5: Solve for x
   x = 3,729,483,830.25/42,777
6. Step 6: Final answer
   x = 87,184.32