Finding the Third Proportional to 10,402,413 and 13,802,889

Step by Step Solution

1. Step 1: Write the proportion equation
   10,402,413 : 13,802,889 = 13,802,889 : x
2. Step 2: Convert to fraction form
   10,402,413/13,802,889 = 13,802,889/x
3. Step 3: Cross multiply
   10,402,413x = 13,802,889 × 13,802,889
4. Step 4: Simplify right side
   10,402,413x = 190,519,744,746,321
5. Step 5: Solve for x
   x = 190,519,744,746,321/10,402,413
6. Step 6: Final answer
   x = 18,314,956.80