Finding the Third Proportional to 309,439,887 and 468,146,164.50

Step by Step Solution

1. Step 1: Write the proportion equation
   309,439,887 : 468,146,164.50 = 468,146,164.50 : x
2. Step 2: Convert to fraction form
   309,439,887/468,146,164.50 = 468,146,164.50/x
3. Step 3: Cross multiply
   309,439,887x = 468,146,164.50 × 468,146,164.50
4. Step 4: Simplify right side
   309,439,887x = 219,160,831,336,061,056
5. Step 5: Solve for x
   x = 219,160,831,336,061,056/309,439,887
6. Step 6: Final answer
   x = 708,250,101.37