Finding the Third Proportional to 5,069,315 and 10,557,985

Step by Step Solution

1. Step 1: Write the proportion equation
   5,069,315 : 10,557,985 = 10,557,985 : x
2. Step 2: Convert to fraction form
   5,069,315/10,557,985 = 10,557,985/x
3. Step 3: Cross multiply
   5,069,315x = 10,557,985 × 10,557,985
4. Step 4: Simplify right side
   5,069,315x = 111,471,047,260,225
5. Step 5: Solve for x
   x = 111,471,047,260,225/5,069,315
6. Step 6: Final answer
   x = 21,989,370.80