Finding the Third Proportional to 314,559,132 and 689,584,440

Step by Step Solution

1. Step 1: Write the proportion equation
   314,559,132 : 689,584,440 = 689,584,440 : x
2. Step 2: Convert to fraction form
   314,559,132/689,584,440 = 689,584,440/x
3. Step 3: Cross multiply
   314,559,132x = 689,584,440 × 689,584,440
4. Step 4: Simplify right side
   314,559,132x = 475,526,699,890,113,600
5. Step 5: Solve for x
   x = 475,526,699,890,113,600/314,559,132
6. Step 6: Final answer
   x = 1,511,724,351.69