Finding the Third Proportional to 39,945,138 and 86,060,910

Step by Step Solution

1. Step 1: Write the proportion equation
   39,945,138 : 86,060,910 = 86,060,910 : x
2. Step 2: Convert to fraction form
   39,945,138/86,060,910 = 86,060,910/x
3. Step 3: Cross multiply
   39,945,138x = 86,060,910 × 86,060,910
4. Step 4: Simplify right side
   39,945,138x = 7,406,480,230,028,100
5. Step 5: Solve for x
   x = 7,406,480,230,028,100/39,945,138
6. Step 6: Final answer
   x = 185,416,313.50