Finding the Third Proportional to 139,780 and 301,808

Step by Step Solution

1. Step 1: Write the proportion equation
   139,780 : 301,808 = 301,808 : x
2. Step 2: Convert to fraction form
   139,780/301,808 = 301,808/x
3. Step 3: Cross multiply
   139,780x = 301,808 × 301,808
4. Step 4: Simplify right side
   139,780x = 91,088,068,864
5. Step 5: Solve for x
   x = 91,088,068,864/139,780
6. Step 6: Final answer
   x = 651,653.09