Finding the Third Proportional to 139,930 and 301,972

Step by Step Solution

1. Step 1: Write the proportion equation
   139,930 : 301,972 = 301,972 : x
2. Step 2: Convert to fraction form
   139,930/301,972 = 301,972/x
3. Step 3: Cross multiply
   139,930x = 301,972 × 301,972
4. Step 4: Simplify right side
   139,930x = 91,187,088,784
5. Step 5: Solve for x
   x = 91,187,088,784/139,930
6. Step 6: Final answer
   x = 651,662.18