Finding the Third Proportional to 319,070 and 493,990.25

Step by Step Solution

1. Step 1: Write the proportion equation
   319,070 : 493,990.25 = 493,990.25 : x
2. Step 2: Convert to fraction form
   319,070/493,990.25 = 493,990.25/x
3. Step 3: Cross multiply
   319,070x = 493,990.25 × 493,990.25
4. Step 4: Simplify right side
   319,070x = 244,026,367,095.06
5. Step 5: Solve for x
   x = 244,026,367,095.06/319,070
6. Step 6: Final answer
   x = 764,805.11