Finding the Third Proportional to 156,931,546 and 215,424,168

Step by Step Solution

1. Step 1: Write the proportion equation
   156,931,546 : 215,424,168 = 215,424,168 : x
2. Step 2: Convert to fraction form
   156,931,546/215,424,168 = 215,424,168/x
3. Step 3: Cross multiply
   156,931,546x = 215,424,168 × 215,424,168
4. Step 4: Simplify right side
   156,931,546x = 46,407,572,158,492,224
5. Step 5: Solve for x
   x = 46,407,572,158,492,224/156,931,546
6. Step 6: Final answer
   x = 295,718,568.65