Finding the Third Proportional to 188,185,116 and 407,640,778

Step by Step Solution

1. Step 1: Write the proportion equation
   188,185,116 : 407,640,778 = 407,640,778 : x
2. Step 2: Convert to fraction form
   188,185,116/407,640,778 = 407,640,778/x
3. Step 3: Cross multiply
   188,185,116x = 407,640,778 × 407,640,778
4. Step 4: Simplify right side
   188,185,116x = 166,171,003,888,445,280
5. Step 5: Solve for x
   x = 166,171,003,888,445,280/188,185,116
6. Step 6: Final answer
   x = 883,018,845.59