Finding the Third Proportional to 64,929,284,003 and 139,630,201,978

Step by Step Solution

1. Step 1: Write the proportion equation
   64,929,284,003 : 139,630,201,978 = 139,630,201,978 : x
2. Step 2: Convert to fraction form
   64,929,284,003/139,630,201,978 = 139,630,201,978/x
3. Step 3: Cross multiply
   64,929,284,003x = 139,630,201,978 × 139,630,201,978
4. Step 4: Simplify right side
   64,929,284,003x = 19,496,593,304,417,074,151,424
5. Step 5: Solve for x
   x = 19,496,593,304,417,074,151,424/64,929,284,003
6. Step 6: Final answer
   x = 300,274,269,211.35