Finding the Third Proportional to 151,623,216 and 216,673,087.50

Step by Step Solution

1. Step 1: Write the proportion equation
   151,623,216 : 216,673,087.50 = 216,673,087.50 : x
2. Step 2: Convert to fraction form
   151,623,216/216,673,087.50 = 216,673,087.50/x
3. Step 3: Cross multiply
   151,623,216x = 216,673,087.50 × 216,673,087.50
4. Step 4: Simplify right side
   151,623,216x = 46,947,226,846,782,656
5. Step 5: Solve for x
   x = 46,947,226,846,782,656/151,623,216
6. Step 6: Final answer
   x = 309,630,860.53