Finding the Third Proportional to 4,706,040 and 9,977,142

Step by Step Solution

1. Step 1: Write the proportion equation
   4,706,040 : 9,977,142 = 9,977,142 : x
2. Step 2: Convert to fraction form
   4,706,040/9,977,142 = 9,977,142/x
3. Step 3: Cross multiply
   4,706,040x = 9,977,142 × 9,977,142
4. Step 4: Simplify right side
   4,706,040x = 99,543,362,488,164
5. Step 5: Solve for x
   x = 99,543,362,488,164/4,706,040
6. Step 6: Final answer
   x = 21,152,255.93