Finding the Third Proportional to 51,044,072.50 and 78,458,410.50

Step by Step Solution

1. Step 1: Write the proportion equation
   51,044,072.50 : 78,458,410.50 = 78,458,410.50 : x
2. Step 2: Convert to fraction form
   51,044,072.50/78,458,410.50 = 78,458,410.50/x
3. Step 3: Cross multiply
   51,044,072.50x = 78,458,410.50 × 78,458,410.50
4. Step 4: Simplify right side
   51,044,072.50x = 6,155,722,178,186,510
5. Step 5: Solve for x
   x = 6,155,722,178,186,510/51,044,072.50
6. Step 6: Final answer
   x = 120,596,219.63