Finding the Third Proportional to 33,990 and 73,438.50

Step by Step Solution

1. Step 1: Write the proportion equation
   33,990 : 73,438.50 = 73,438.50 : x
2. Step 2: Convert to fraction form
   33,990/73,438.50 = 73,438.50/x
3. Step 3: Cross multiply
   33,990x = 73,438.50 × 73,438.50
4. Step 4: Simplify right side
   33,990x = 5,393,213,282.25
5. Step 5: Solve for x
   x = 5,393,213,282.25/33,990
6. Step 6: Final answer
   x = 158,670.59