Finding the Third Proportional to 64,818 and 139,032

Step by Step Solution

1. Step 1: Write the proportion equation
   64,818 : 139,032 = 139,032 : x
2. Step 2: Convert to fraction form
   64,818/139,032 = 139,032/x
3. Step 3: Cross multiply
   64,818x = 139,032 × 139,032
4. Step 4: Simplify right side
   64,818x = 19,329,897,024
5. Step 5: Solve for x
   x = 19,329,897,024/64,818
6. Step 6: Final answer
   x = 298,218.04