Finding the Third Proportional to 19,661 and 42,777.50

Step by Step Solution

1. Step 1: Write the proportion equation
   19,661 : 42,777.50 = 42,777.50 : x
2. Step 2: Convert to fraction form
   19,661/42,777.50 = 42,777.50/x
3. Step 3: Cross multiply
   19,661x = 42,777.50 × 42,777.50
4. Step 4: Simplify right side
   19,661x = 1,829,914,506.25
5. Step 5: Solve for x
   x = 1,829,914,506.25/19,661
6. Step 6: Final answer
   x = 93,073.32