Finding the Third Proportional to 28,870 and 65,207.50

Step by Step Solution

1. Step 1: Write the proportion equation
   28,870 : 65,207.50 = 65,207.50 : x
2. Step 2: Convert to fraction form
   28,870/65,207.50 = 65,207.50/x
3. Step 3: Cross multiply
   28,870x = 65,207.50 × 65,207.50
4. Step 4: Simplify right side
   28,870x = 4,252,018,056.25
5. Step 5: Solve for x
   x = 4,252,018,056.25/28,870
6. Step 6: Final answer
   x = 147,281.54