Finding the Third Proportional to 122,865,961.50 and 263,967,061.50

Step by Step Solution

1. Step 1: Write the proportion equation
   122,865,961.50 : 263,967,061.50 = 263,967,061.50 : x
2. Step 2: Convert to fraction form
   122,865,961.50/263,967,061.50 = 263,967,061.50/x
3. Step 3: Cross multiply
   122,865,961.50x = 263,967,061.50 × 263,967,061.50
4. Step 4: Simplify right side
   122,865,961.50x = 69,678,609,556,944,784
5. Step 5: Solve for x
   x = 69,678,609,556,944,784/122,865,961.50
6. Step 6: Final answer
   x = 567,110,766.12