Finding the Third Proportional to 51,990 and 72,437

Step by Step Solution

1. Step 1: Write the proportion equation
   51,990 : 72,437 = 72,437 : x
2. Step 2: Convert to fraction form
   51,990/72,437 = 72,437/x
3. Step 3: Cross multiply
   51,990x = 72,437 × 72,437
4. Step 4: Simplify right side
   51,990x = 5,247,118,969
5. Step 5: Solve for x
   x = 5,247,118,969/51,990
6. Step 6: Final answer
   x = 100,925.54