Finding the Third Proportional to 99,440 and 139,032

Step by Step Solution

1. Step 1: Write the proportion equation
   99,440 : 139,032 = 139,032 : x
2. Step 2: Convert to fraction form
   99,440/139,032 = 139,032/x
3. Step 3: Cross multiply
   99,440x = 139,032 × 139,032
4. Step 4: Simplify right side
   99,440x = 19,329,897,024
5. Step 5: Solve for x
   x = 19,329,897,024/99,440
6. Step 6: Final answer
   x = 194,387.54