Finding the Third Proportional to 92,188 and 139,130

Step by Step Solution

1. Step 1: Write the proportion equation
   92,188 : 139,130 = 139,130 : x
2. Step 2: Convert to fraction form
   92,188/139,130 = 139,130/x
3. Step 3: Cross multiply
   92,188x = 139,130 × 139,130
4. Step 4: Simplify right side
   92,188x = 19,357,156,900
5. Step 5: Solve for x
   x = 19,357,156,900/92,188
6. Step 6: Final answer
   x = 209,974.80