Finding the Third Proportional to 37,173,986 and 78,778,468

Step by Step Solution

1. Step 1: Write the proportion equation
   37,173,986 : 78,778,468 = 78,778,468 : x
2. Step 2: Convert to fraction form
   37,173,986/78,778,468 = 78,778,468/x
3. Step 3: Cross multiply
   37,173,986x = 78,778,468 × 78,778,468
4. Step 4: Simplify right side
   37,173,986x = 6,206,047,020,427,024
5. Step 5: Solve for x
   x = 6,206,047,020,427,024/37,173,986
6. Step 6: Final answer
   x = 166,945,966.47