Finding the Third Proportional to 51,436,738.50 and 78,360,982.50

Step by Step Solution

1. Step 1: Write the proportion equation
   51,436,738.50 : 78,360,982.50 = 78,360,982.50 : x
2. Step 2: Convert to fraction form
   51,436,738.50/78,360,982.50 = 78,360,982.50/x
3. Step 3: Cross multiply
   51,436,738.50x = 78,360,982.50 × 78,360,982.50
4. Step 4: Simplify right side
   51,436,738.50x = 6,140,443,578,365,306
5. Step 5: Solve for x
   x = 6,140,443,578,365,306/51,436,738.50
6. Step 6: Final answer
   x = 119,378,556.21