Finding the Third Proportional to 99,752 and 139,972

Step by Step Solution

1. Step 1: Write the proportion equation
   99,752 : 139,972 = 139,972 : x
2. Step 2: Convert to fraction form
   99,752/139,972 = 139,972/x
3. Step 3: Cross multiply
   99,752x = 139,972 × 139,972
4. Step 4: Simplify right side
   99,752x = 19,592,160,784
5. Step 5: Solve for x
   x = 19,592,160,784/99,752
6. Step 6: Final answer
   x = 196,408.70