Finding the Third Proportional to 76,860 and 103,602

Step by Step Solution

1. Step 1: Write the proportion equation
   76,860 : 103,602 = 103,602 : x
2. Step 2: Convert to fraction form
   76,860/103,602 = 103,602/x
3. Step 3: Cross multiply
   76,860x = 103,602 × 103,602
4. Step 4: Simplify right side
   76,860x = 10,733,374,404
5. Step 5: Solve for x
   x = 10,733,374,404/76,860
6. Step 6: Final answer
   x = 139,648.38