Finding the Third Proportional to 71,428.50 and 169,222.50

Step by Step Solution

1. Step 1: Write the proportion equation
   71,428.50 : 169,222.50 = 169,222.50 : x
2. Step 2: Convert to fraction form
   71,428.50/169,222.50 = 169,222.50/x
3. Step 3: Cross multiply
   71,428.50x = 169,222.50 × 169,222.50
4. Step 4: Simplify right side
   71,428.50x = 28,636,254,506.25
5. Step 5: Solve for x
   x = 28,636,254,506.25/71,428.50
6. Step 6: Final answer
   x = 400,907.96