Finding the Third Proportional to 2,155,188,644 and 4,646,779,440.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,155,188,644 : 4,646,779,440.50 = 4,646,779,440.50 : x
2. Step 2: Convert to fraction form
   2,155,188,644/4,646,779,440.50 = 4,646,779,440.50/x
3. Step 3: Cross multiply
   2,155,188,644x = 4,646,779,440.50 × 4,646,779,440.50
4. Step 4: Simplify right side
   2,155,188,644x = 21,592,559,168,653,492,224
5. Step 5: Solve for x
   x = 21,592,559,168,653,492,224/2,155,188,644
6. Step 6: Final answer
   x = 10,018,872,003.97