Finding the Third Proportional to 2,499,217,390 and 5,205,293,492

Step by Step Solution

1. Step 1: Write the proportion equation
   2,499,217,390 : 5,205,293,492 = 5,205,293,492 : x
2. Step 2: Convert to fraction form
   2,499,217,390/5,205,293,492 = 5,205,293,492/x
3. Step 3: Cross multiply
   2,499,217,390x = 5,205,293,492 × 5,205,293,492
4. Step 4: Simplify right side
   2,499,217,390x = 27,095,080,337,857,552,384
5. Step 5: Solve for x
   x = 27,095,080,337,857,552,384/2,499,217,390
6. Step 6: Final answer
   x = 10,841,425,978.50