Finding the Third Proportional to 208,912 and 493,072

Step by Step Solution

1. Step 1: Write the proportion equation
   208,912 : 493,072 = 493,072 : x
2. Step 2: Convert to fraction form
   208,912/493,072 = 493,072/x
3. Step 3: Cross multiply
   208,912x = 493,072 × 493,072
4. Step 4: Simplify right side
   208,912x = 243,119,997,184
5. Step 5: Solve for x
   x = 243,119,997,184/208,912
6. Step 6: Final answer
   x = 1,163,743.57