Finding the Third Proportional to 6,688,980 and 10,249,173

Step by Step Solution

1. Step 1: Write the proportion equation
   6,688,980 : 10,249,173 = 10,249,173 : x
2. Step 2: Convert to fraction form
   6,688,980/10,249,173 = 10,249,173/x
3. Step 3: Cross multiply
   6,688,980x = 10,249,173 × 10,249,173
4. Step 4: Simplify right side
   6,688,980x = 105,045,547,183,929
5. Step 5: Solve for x
   x = 105,045,547,183,929/6,688,980
6. Step 6: Final answer
   x = 15,704,269.89