Finding the Third Proportional to 139,004 and 305,072

Step by Step Solution

1. Step 1: Write the proportion equation
   139,004 : 305,072 = 305,072 : x
2. Step 2: Convert to fraction form
   139,004/305,072 = 305,072/x
3. Step 3: Cross multiply
   139,004x = 305,072 × 305,072
4. Step 4: Simplify right side
   139,004x = 93,068,925,184
5. Step 5: Solve for x
   x = 93,068,925,184/139,004
6. Step 6: Final answer
   x = 669,541.35