Finding the Third Proportional to 210,590 and 497,131.50

Step by Step Solution

1. Step 1: Write the proportion equation
   210,590 : 497,131.50 = 497,131.50 : x
2. Step 2: Convert to fraction form
   210,590/497,131.50 = 497,131.50/x
3. Step 3: Cross multiply
   210,590x = 497,131.50 × 497,131.50
4. Step 4: Simplify right side
   210,590x = 247,139,728,292.25
5. Step 5: Solve for x
   x = 247,139,728,292.25/210,590
6. Step 6: Final answer
   x = 1,173,558.71