Finding the Third Proportional to 73,509 and 109,720.50

Step by Step Solution

1. Step 1: Write the proportion equation
   73,509 : 109,720.50 = 109,720.50 : x
2. Step 2: Convert to fraction form
   73,509/109,720.50 = 109,720.50/x
3. Step 3: Cross multiply
   73,509x = 109,720.50 × 109,720.50
4. Step 4: Simplify right side
   73,509x = 12,038,588,120.25
5. Step 5: Solve for x
   x = 12,038,588,120.25/73,509
6. Step 6: Final answer
   x = 163,770.26