Finding the Third Proportional to 10,402,380 and 13,802,856

Step by Step Solution

1. Step 1: Write the proportion equation
   10,402,380 : 13,802,856 = 13,802,856 : x
2. Step 2: Convert to fraction form
   10,402,380/13,802,856 = 13,802,856/x
3. Step 3: Cross multiply
   10,402,380x = 13,802,856 × 13,802,856
4. Step 4: Simplify right side
   10,402,380x = 190,518,833,756,736
5. Step 5: Solve for x
   x = 190,518,833,756,736/10,402,380
6. Step 6: Final answer
   x = 18,314,927.33