Finding the Third Proportional to 69,985.50 and 72,001.50

Step by Step Solution

1. Step 1: Write the proportion equation
   69,985.50 : 72,001.50 = 72,001.50 : x
2. Step 2: Convert to fraction form
   69,985.50/72,001.50 = 72,001.50/x
3. Step 3: Cross multiply
   69,985.50x = 72,001.50 × 72,001.50
4. Step 4: Simplify right side
   69,985.50x = 5,184,216,002.25
5. Step 5: Solve for x
   x = 5,184,216,002.25/69,985.50
6. Step 6: Final answer
   x = 74,075.57