Finding the Third Proportional to 7,287,278 and 10,890,759

Step by Step Solution

1. Step 1: Write the proportion equation
   7,287,278 : 10,890,759 = 10,890,759 : x
2. Step 2: Convert to fraction form
   7,287,278/10,890,759 = 10,890,759/x
3. Step 3: Cross multiply
   7,287,278x = 10,890,759 × 10,890,759
4. Step 4: Simplify right side
   7,287,278x = 118,608,631,596,081
5. Step 5: Solve for x
   x = 118,608,631,596,081/7,287,278
6. Step 6: Final answer
   x = 16,276,122.80