Finding the Third Proportional to 86,455,688 and 185,267,380

Step by Step Solution

1. Step 1: Write the proportion equation
   86,455,688 : 185,267,380 = 185,267,380 : x
2. Step 2: Convert to fraction form
   86,455,688/185,267,380 = 185,267,380/x
3. Step 3: Cross multiply
   86,455,688x = 185,267,380 × 185,267,380
4. Step 4: Simplify right side
   86,455,688x = 34,324,002,092,064,400
5. Step 5: Solve for x
   x = 34,324,002,092,064,400/86,455,688
6. Step 6: Final answer
   x = 397,012,653.37