Finding the Third Proportional to 689,441,688 and 1,474,434,792

Step by Step Solution

1. Step 1: Write the proportion equation
   689,441,688 : 1,474,434,792 = 1,474,434,792 : x
2. Step 2: Convert to fraction form
   689,441,688/1,474,434,792 = 1,474,434,792/x
3. Step 3: Cross multiply
   689,441,688x = 1,474,434,792 × 1,474,434,792
4. Step 4: Simplify right side
   689,441,688x = 2,173,957,955,860,083,200
5. Step 5: Solve for x
   x = 2,173,957,955,860,083,200/689,441,688
6. Step 6: Final answer
   x = 3,153,215,121.31