Finding the Third Proportional to 2,139,973,853 and 4,340,118,898

Step by Step Solution

1. Step 1: Write the proportion equation
   2,139,973,853 : 4,340,118,898 = 4,340,118,898 : x
2. Step 2: Convert to fraction form
   2,139,973,853/4,340,118,898 = 4,340,118,898/x
3. Step 3: Cross multiply
   2,139,973,853x = 4,340,118,898 × 4,340,118,898
4. Step 4: Simplify right side
   2,139,973,853x = 18,836,632,048,776,732,672
5. Step 5: Solve for x
   x = 18,836,632,048,776,732,672/2,139,973,853
6. Step 6: Final answer
   x = 8,802,272,056.91