Finding the Third Proportional to 17,977,670 and 39,620,066

Step by Step Solution

1. Step 1: Write the proportion equation
   17,977,670 : 39,620,066 = 39,620,066 : x
2. Step 2: Convert to fraction form
   17,977,670/39,620,066 = 39,620,066/x
3. Step 3: Cross multiply
   17,977,670x = 39,620,066 × 39,620,066
4. Step 4: Simplify right side
   17,977,670x = 1,569,749,629,844,356
5. Step 5: Solve for x
   x = 1,569,749,629,844,356/17,977,670
6. Step 6: Final answer
   x = 87,316,633.90