Finding the Third Proportional to 51,054,839,304 and 78,426,484,236

Step by Step Solution

1. Step 1: Write the proportion equation
   51,054,839,304 : 78,426,484,236 = 78,426,484,236 : x
2. Step 2: Convert to fraction form
   51,054,839,304/78,426,484,236 = 78,426,484,236/x
3. Step 3: Cross multiply
   51,054,839,304x = 78,426,484,236 × 78,426,484,236
4. Step 4: Simplify right side
   51,054,839,304x = 6,150,713,429,619,556,483,072
5. Step 5: Solve for x
   x = 6,150,713,429,619,556,483,072/51,054,839,304
6. Step 6: Final answer
   x = 120,472,682,187.79