Finding the Third Proportional to 19,705,678.50 and 31,379,746.50

Step by Step Solution

1. Step 1: Write the proportion equation
   19,705,678.50 : 31,379,746.50 = 31,379,746.50 : x
2. Step 2: Convert to fraction form
   19,705,678.50/31,379,746.50 = 31,379,746.50/x
3. Step 3: Cross multiply
   19,705,678.50x = 31,379,746.50 × 31,379,746.50
4. Step 4: Simplify right side
   19,705,678.50x = 984,688,490,404,262.25
5. Step 5: Solve for x
   x = 984,688,490,404,262.25/19,705,678.50
6. Step 6: Final answer
   x = 49,969,783.60