Finding the Third Proportional to 288,186 and 626,203.50

Step by Step Solution

1. Step 1: Write the proportion equation
   288,186 : 626,203.50 = 626,203.50 : x
2. Step 2: Convert to fraction form
   288,186/626,203.50 = 626,203.50/x
3. Step 3: Cross multiply
   288,186x = 626,203.50 × 626,203.50
4. Step 4: Simplify right side
   288,186x = 392,130,823,412.25
5. Step 5: Solve for x
   x = 392,130,823,412.25/288,186
6. Step 6: Final answer
   x = 1,360,686.58