Finding the Third Proportional to 1,638,840,888 and 3,604,567,819.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,638,840,888 : 3,604,567,819.50 = 3,604,567,819.50 : x
2. Step 2: Convert to fraction form
   1,638,840,888/3,604,567,819.50 = 3,604,567,819.50/x
3. Step 3: Cross multiply
   1,638,840,888x = 3,604,567,819.50 × 3,604,567,819.50
4. Step 4: Simplify right side
   1,638,840,888x = 12,992,909,165,374,984,192
5. Step 5: Solve for x
   x = 12,992,909,165,374,984,192/1,638,840,888
6. Step 6: Final answer
   x = 7,928,108,982.70