Finding the Third Proportional to 30,897 and 67,810.50

Step by Step Solution

1. Step 1: Write the proportion equation
   30,897 : 67,810.50 = 67,810.50 : x
2. Step 2: Convert to fraction form
   30,897/67,810.50 = 67,810.50/x
3. Step 3: Cross multiply
   30,897x = 67,810.50 × 67,810.50
4. Step 4: Simplify right side
   30,897x = 4,598,263,910.25
5. Step 5: Solve for x
   x = 4,598,263,910.25/30,897
6. Step 6: Final answer
   x = 148,825.58