Finding the Third Proportional to 384,978,460.50 and 831,320,253

Step by Step Solution

1. Step 1: Write the proportion equation
   384,978,460.50 : 831,320,253 = 831,320,253 : x
2. Step 2: Convert to fraction form
   384,978,460.50/831,320,253 = 831,320,253/x
3. Step 3: Cross multiply
   384,978,460.50x = 831,320,253 × 831,320,253
4. Step 4: Simplify right side
   384,978,460.50x = 691,093,363,047,984,000
5. Step 5: Solve for x
   x = 691,093,363,047,984,000/384,978,460.50
6. Step 6: Final answer
   x = 1,795,148,128.94