Finding the Third Proportional to 190,107,616 and 407,499,512

Step by Step Solution

1. Step 1: Write the proportion equation
   190,107,616 : 407,499,512 = 407,499,512 : x
2. Step 2: Convert to fraction form
   190,107,616/407,499,512 = 407,499,512/x
3. Step 3: Cross multiply
   190,107,616x = 407,499,512 × 407,499,512
4. Step 4: Simplify right side
   190,107,616x = 166,055,852,280,238,144
5. Step 5: Solve for x
   x = 166,055,852,280,238,144/190,107,616
6. Step 6: Final answer
   x = 873,483,428.88