Finding the Third Proportional to 87,372 and 186,190.50

Step by Step Solution

1. Step 1: Write the proportion equation
   87,372 : 186,190.50 = 186,190.50 : x
2. Step 2: Convert to fraction form
   87,372/186,190.50 = 186,190.50/x
3. Step 3: Cross multiply
   87,372x = 186,190.50 × 186,190.50
4. Step 4: Simplify right side
   87,372x = 34,666,902,290.25
5. Step 5: Solve for x
   x = 34,666,902,290.25/87,372
6. Step 6: Final answer
   x = 396,773.59