Finding the Third Proportional to 156,379,131 and 212,142,463.50

Step by Step Solution

1. Step 1: Write the proportion equation
   156,379,131 : 212,142,463.50 = 212,142,463.50 : x
2. Step 2: Convert to fraction form
   156,379,131/212,142,463.50 = 212,142,463.50/x
3. Step 3: Cross multiply
   156,379,131x = 212,142,463.50 × 212,142,463.50
4. Step 4: Simplify right side
   156,379,131x = 45,004,424,819,848,832
5. Step 5: Solve for x
   x = 45,004,424,819,848,832/156,379,131
6. Step 6: Final answer
   x = 287,790,477.75