Finding the Third Proportional to 222,638.63 and 525,046.50

Step by Step Solution

1. Step 1: Write the proportion equation
   222,638.63 : 525,046.50 = 525,046.50 : x
2. Step 2: Convert to fraction form
   222,638.63/525,046.50 = 525,046.50/x
3. Step 3: Cross multiply
   222,638.63x = 525,046.50 × 525,046.50
4. Step 4: Simplify right side
   222,638.63x = 275,673,827,162.25
5. Step 5: Solve for x
   x = 275,673,827,162.25/222,638.63
6. Step 6: Final answer
   x = 1,238,212.05