Finding the Third Proportional to 91,763 and 129,219.50

Step by Step Solution

1. Step 1: Write the proportion equation
   91,763 : 129,219.50 = 129,219.50 : x
2. Step 2: Convert to fraction form
   91,763/129,219.50 = 129,219.50/x
3. Step 3: Cross multiply
   91,763x = 129,219.50 × 129,219.50
4. Step 4: Simplify right side
   91,763x = 16,697,679,180.25
5. Step 5: Solve for x
   x = 16,697,679,180.25/91,763
6. Step 6: Final answer
   x = 181,965.27