Finding the Third Proportional to 28,809 and 69,322.50

Step by Step Solution

1. Step 1: Write the proportion equation
   28,809 : 69,322.50 = 69,322.50 : x
2. Step 2: Convert to fraction form
   28,809/69,322.50 = 69,322.50/x
3. Step 3: Cross multiply
   28,809x = 69,322.50 × 69,322.50
4. Step 4: Simplify right side
   28,809x = 4,805,609,006.25
5. Step 5: Solve for x
   x = 4,805,609,006.25/28,809
6. Step 6: Final answer
   x = 166,809.30