Finding the Third Proportional to 9,218,306 and 13,279,328

Step by Step Solution

1. Step 1: Write the proportion equation
   9,218,306 : 13,279,328 = 13,279,328 : x
2. Step 2: Convert to fraction form
   9,218,306/13,279,328 = 13,279,328/x
3. Step 3: Cross multiply
   9,218,306x = 13,279,328 × 13,279,328
4. Step 4: Simplify right side
   9,218,306x = 176,340,552,131,584
5. Step 5: Solve for x
   x = 176,340,552,131,584/9,218,306
6. Step 6: Final answer
   x = 19,129,388.00